Automatic oil-relief valve.



H. BRAUNTON. AUTMATIC OIL-RELIEF VALVE, APPLICATION FILED MAR. 1o, 1913.

1;@669 l ?9 y Patented July 1, 1913.

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I Be iu known that l, HAROLD BRAUNToN, a citizen of the United States, residing in the 'cityjfand county of San Francisco and AState relief valve for-...rotary cylinderengines of .the valveless orA tivo-cycle type ln operatingrevolving cylinder engines of the two-cycle type it often happens that conaofi1 by the hydraulic action of a suiicientaccumulation of oil bet-Ween the piston and cylinder head.

The object of this invention is to provide an automatic valve throughV which any ei:- cessive deposit or accumulation of oil may be automatically discharged While the engine is in operation.

The invention consists of the parts and the construction and combination of parts `as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which- Figure 1 is a vertical section of the outer portion of the cylinder showing the application of the valve. Fig. 2 is a plan view of the valve mechanism. Fig. 3 is a bottom view of the tloat member attached to the valve.

Referring to the drawings, A indicates'in n general the outer portion of a gas engine cylinder of the revolvingcylinder valveless -or two-cycle type. ln operating revolving cylinder engines of this type it often hap:

pens that considerable lubricating oil collects in the compression chamber of the r(ylinder causing' a great deal of trouble. he oil in some instances being carbcnized by the vheat of combustion' forms a glowing mass which pre-ignites the charges admitted; in other instances it fouls the spark plugs sutilcicntly to entirely'prevent ignition.

The object of the invention is to provide an automatic valve through which any ac- Speccaticn of Letters Patent.

Application filed. March 10, 1918@ Serial No. 753,250.:

Patenten .nog mais'.

cumulation of oii may bei automatically discharged while the engine 1s running..

Theval-ve referred to'ispreferablymounted in the extreme outer portion. of the c 7linder and is herel shownv as consisting or a iioat member 2, to which is securdd a conical valve member 3 .and `a. guide steine;y The valve, stem and attached float areslidably mounted and guided in a removable screw cap 5 mounted in the outer end of thecylinder. The cap 5 is also; provided with a valve seat 6 and a series of radially extending .ports or. passages 7 adapted to be closed by the valve 3. The outer end of the stem is provided with a stop collar or pin 8 for the purpose of limiting the inward movement of the valve and also .to prevent. the valve from dropping into the cylinder.

ln operation, suppose that the cylinder is revolving at a high rate of speed and that. a certain amount of lubricating oil is constantly forced oubg-S into the compression chamber by the action of centrifugal force, it can then be seen that it will only be a matter of time when a sufficient amount. of oil will collect inthe bottom l() of the screw v cap, around the float member, to lift the floatand connected valve and allow the oil to escapeithrough the radial passages 7. The oil accumulation will thus lautomatically discharge itself through the radial passages in the screw cap and prevent'` fouling of the spark plug or carbonization of the lubricating oil-in the outer port-ion or compression chamber of the cylinder.

The Heat member, ltogether with the valve and stem, has suoient` weight, when, actuated by centrifugal force, to normally retain the valve 5 on its seat and close the radial passages and will thus prevent lealiplosion` takes place, while thesetcollan or pin 8 will prevent the valve from dropping into thecompression chamber when the cylinder remains stationary in a vertical position. l also Wish it understood that the valve mechanism here shown may be equally .K

The valve mechanism vhere shown is simle and compact 1n construction and positive inaction and may be quickly removed and cleaned at any time by unscrewing-the cap. 110

The radial discharge passages formed in the cap are. so positioned that they may be easily cleaned at any time by simply lforcing a Wire or pin through the perforations, thus preventing the'deposit of any carbon particles or other material which might clog the passages.

The materials and finish of the different parts forming the valve mechanism may be suchv as the experience and judgment ot the manufacturer may dictate.

I Wish it understood that various changes in form, proportions and minor details of construction may be resorted to within the scope of the appended claimsand that I do not wish to limit myself to the specific design and construction here shown.

Having thus described my invention, What I claim and desire to secure by Letters Patvent is" l. The combination with the cylinder of an engine, of an oil collecting chamber, a discharge passage opening out from said chamber through which oil may escape, a valve closing said passage, and means controlled by the collection of oil in the chamber for opening the valve to permit the discharge of the collected oil.

2. In a revolving cylinder engine, an oil collecting chamber, a discharge passage opening c-ut trom said chamber through which oil may escape, a valve closing said passage, and means controlled by the collection of oil in the chamber for opening the valve to permit the discharge of the collected oil.

3. In a rotary cylinder engine, an oil collecting chamber, a discharge passage connected with said chamber, a centritugally actuated valve adapt-ed to normally close said passage, and means actuated by the collection ci oil in said chamber for lifting the valve to permit the oil to escape through the discharge passage. t 4f. In a rotary cylinder engine, the combinat-ion of a removable housing connected with the compression chamber of the cylinder, an oil collectingr chamber formed in said housing, a discharge passage opening out from saidchamber, arcciprocally movable .valve mounted in the casing adapted to close Efrom said chamber, a reciprocally mounted,

centrifugally actuated valve in the housing adapted to close said passages, and a float in the oil collecting chamber connected with the valve actuated by the collection of oil in the chamber to lift the valve to permit the escape of oil through the discharge passages.

6. In a rotary cylinder engine, the combination of a removable housing connected with the compression chamber of the cylindei', an oil collecting chamber formed in said housing, discharge passages opening out from said chamber', a centrifugally closed, reciprocally mounted Valve in the housing adapted to close said passages, a float in the oil collectingchamber connected with the valve actuated by the collection ot oil in the chamber to lift the valve to permit the escape of oil through the discharge, passages, and means for limiting the movement of the valve.

7. In a revolving cylinder engine, the combination of a cylinder with means toi" automatically releasing any unconsumed accuniulation of oil from the cylinder com- 8b' prising a port in the cmprcssion chamber ot' the cylinder, and a buoyant valve normally closing said port and opened by the accumulation of oil.

In testimony whcreot1 I have hereunto set 90 my hand in the presence ot' two subscribing Witnesses.

HAROLD BRAUNTON. Vitnesses IN. WV. HEALEY, Zon HannisoN. 

